There would be no role of spoiler for Colorado on Saturday as they got behind less than two minutes into the game at No. 2 Oregon and never recovered. The Ducks, who led 56-0 at halftime, rolled to a 70-14 win.

Colorado scored its points against most of the Oregon reserves, who started coming into the game late in the first half.

The rebuilding Buffaloes (1-7, 1-4 Pac-12) faced the best defense in Oregon coach Chip Kelly’s four years. Coming into the game, the Ducks (8-0, 5-0) has outscored its opponents in the first half 234-56, Colorado has been outscored in the first half 183-79. The Ducks were averaging 51 points a game, and they hit that by halftime.

It was homecoming for Oregon, and the Halloween-clad crowd had been dealing with the rain all morning at Autzen Stadium.

With another big play by the defense, Oregon scored five plays after an interception return to the CU 32-yard line for a 70-14 lead with 1 minute left in the third quarter. Bryan Bennett scored on a 17-yard run on third-and-15.

CU backup quarterback Nick Hirschman was intercepted on first down by Oregon’s Derrick Malone at the CU 48 and he returned it 16 yards.

Oregon up 63-14

It took Oregon 11 minutes to get its first touchdown of the second half, but the Ducks claimed a 63-14 lead on Bryan Bennett’s 3-yard run to cap a 10-play, 75-yard drive.

Buffs score again

Colorado made good on an Oregon turn over and scored another touchdown to trail 56-14 with 8:02 left in the third quarter.

Christian Powell scored on a 20-yard run three plays after the Buffs recovered an Oregon turnover. This after an 11-yard run the 31-yard drive’s first play.

Oregon’s Ayele Forde fumble on the Ducks’ first possession of the second half and gave CU the ball at the Oregon 31.

Buffs on board

With backup QB Nick Hirschman leading the drive, Colorado got on the board, scoring on Christian Powell’s 1-yard run to trail 56-7 but avoided the shutout.

The 13-play drive to open the second half covered 72 yards. Hirschman, who came in late in the first half, was 3-of-7 passing for 50 yards on the drive, and Powell picked up 21 yards on four carries.

Oregon leads 56-0 at halftime

With the Oregon coaches going to the reserves in the first half, Oregon took a 56-0 lead with backup quarterback Bryan Bennett leading another scoring drive.

Bennett had a 31-yard keeper and scored on a 5-yard run with 20 seconds left in the first half. The seven-play, 68-yard drive took just 1:59; it was the sixth scoring drive of the game less than two minutes.

Oregon had 447 yards in the first half, to the Buffaloes’ 104. Oregon averaged 10.4 yards per play in the first half.

Oregon scores again, 49-0 lead

Oregon expanded the lead to 49-0 with Marcus Mariota’s second TD pass of the game, this one 7 yards to Daryle Hawkins with 6:16 left in the first half.

The Ducks started the drive on the CU 39 after the Buffs were called for batting the ball on the punt. The drive took nine plays and nearly 3 minutes.

Oregon up 42-0 lead in second quarter

Oregon scored on De’Anthony Thomas’ 73-yard punt return to take a 42-0 lead with 11:06 left in the first half, right after completing a 97-yard drive.

Thomas’ return came after the Ducks held Colorado to three-and-out coming off Oregon’s 97-yard scoring in eight plays for a 35-0 lead with 12½ minutes left in the first half. Kenjon Barner scored on a 24-yard run to end the drive that took 2:13, the first one longer than two minutes.

Ducks lead 28-0 in first quarter

Marcus Mariota’s 14-yard play-action pass to Bralon Addison with 1:44 left in the first quarter gave the Ducks a 28-0 lead as the hurry-up offense was constantly moving. All four touchdown drives have taken less than two minutes.

On the first play of the drive, a 77-yard scoring run by Kenjon Barner two minutes earlier was negated by a holding penalty. No matter as the Ducks scored five plays later.

Oregon up 21-0 already

Oregon had 92 yards in front of them, but no matter as they got to the end zone in five plays to take a 21-0 lead with barely 8 minutes played in the game.

De’Anthony Thomas had a 26-yard run to the Oregon 47, and Marcus Mariota connected with Kenjon Barner for a 48-yard pass on the next play to the Colorado 5-yard line.

Mariota scored on the next play with 6:56 left in the first quarter.

CU: one play, three penalties

CU’s Donta Abron held onto the Buffs’ second kickoff return getting out to the 21 and then Oregon was called for a 15-yard facemask penalty. But starting at their 46-yard line didn’t seem to help.

After picked up a first down, Colorado on the next play was called for three penalties on one play: holding by tight end Nick Kasa, illegal block below the waist by wide receiver Dustin Ebner and then a two-man chop block (a high-low hit on one player), which the Ducks took to move back the Buffs 15 yards. CU got back to their 46 and then punted.

Ducks lead 14-0 just like that

Oregon is out to a 14-0 lead 2½ minutes into the game, taking advantage of a CU muff on a kickoff return.

After Oregon’s first drive, the Buffs’ sophomore Tony Jones muffed the return on the ensuing kickoff and Oregon’s Avery Patterson recovered it at the CU 17-yard line.

The Ducks scored three plays later on De’Anthony Thomas’ 9-yard run.

Off and running; Ducks up 7-0

It took Oregon less than two minutes seconds to get on the scoreboard, taking a 7-0 lead with 13:13 left in the first quarter on a 5-play, 57-yard drive.

Oregon won the toss and chose to receive the ball first; the Ducks started their first drive at their 42-yard line. Kenjon Barner rambled 42 yards on a third-down play to the CU 6, and he scored two plays later on a 1-yard run.

On the ensuing kickoff, the Buffs’ Tony Jones muffed the return catch and Oregon’s Avery Patterson recovered it at the CU 17-yard line.

KANSAS CITY, Mo. — Tyreek Hill didn’t know what to do when he started hearing thousands of people in Arrowhead Stadium chanting his name, even as he stood all alone on the frozen turf waiting for the punt.